The element immediately following hydrogen is helium, the atom ____ which contains two electrons.
The element immediately following hydrogen is helium, the atom ____ which contains two electrons.
The atmosphere of Mars consists mostly of ______. A: oxygen B: carbon dioxde C: helium D: nitrous oxide
The atmosphere of Mars consists mostly of ______. A: oxygen B: carbon dioxde C: helium D: nitrous oxide
In the fusion reaction of elements formed in the universe, carbon nuclei can be directly generated from helium nuclei. A: 正确 B: 错误
In the fusion reaction of elements formed in the universe, carbon nuclei can be directly generated from helium nuclei. A: 正确 B: 错误
Ice is to water as () A: oxygen is to hydrogen B: snow is to helium C: water is to steam D: road is to path E: ice cream is to popsicle
Ice is to water as () A: oxygen is to hydrogen B: snow is to helium C: water is to steam D: road is to path E: ice cream is to popsicle
Questions 11 to 13 are based on the following talk on greenhouse gas. You now have 15 seconds to read Questions 11 to 13. Which is the most important greenhouse gas A: Methane. B: Carbon dioxide. C: Oxygen. D: Helium.
Questions 11 to 13 are based on the following talk on greenhouse gas. You now have 15 seconds to read Questions 11 to 13. Which is the most important greenhouse gas A: Methane. B: Carbon dioxide. C: Oxygen. D: Helium.
22. The 12 people floating up into the air turned out to be___. A: A 12 friends of Ernie Jenkins B: B12 dolls filled with helium C: C 12 people who were on their way to the party D: D 12 flowers of Jesus
22. The 12 people floating up into the air turned out to be___. A: A 12 friends of Ernie Jenkins B: B12 dolls filled with helium C: C 12 people who were on their way to the party D: D 12 flowers of Jesus
Cane : Wait, wait. Wait! Russell, hang on. Walk back. Walk back. Russell: Okay. Cane : Come on. Come on. Where.... Where are we? Russell: This doesn't look like the city or the 1 , Mr. Fredricksen. Cane : Don't worry, Ellie. I got it. There it is! Ellie, it's so beautiful! We made it! We made it! Russell, we could 2 right over there! Climb up, climb up! Russell: You mean, assist you? Cane : Yeah, yeah, whatever. Russell: Okay, I'll climb up! Cane : Watch it! Russell: Sorry. Cane : Now, when you get up there, 3 and hoist me up. Got it? Do you on the porch yet? What? That's it? I came all this way here to get stuck. At the wrong end of this rock pile? Great. Russell: Hey, if I could assist you over there, would you sign off on my badge? Cane : What are you talking about? Russell: We could walk your house to the fall. Cane : Walk it? Russell: Yeah. After all, we weigh it down. We could walk it right over there. Like a parade balloon. Cane : Now, we're gonna walk to the falls quickly and quietly. With no rap music or flash dancing. We have three days at best. Till the helium 4 those balloons. And if we are not at the falls when that happens Russell: Sand Cane : We're not getting to the falls. Russell: I found sand! Cane : Don't you worry, Ellie. We'll get our house over there. Russell: It is fun already, isn't it? By the time we get there, You're gonna feel so assisted. Oh, Mr. Fredricksen, if we happen to get 5 , use the wilderness explorer call. Wait, why are we going to paradise falls, again? Cane : Hey, let's play a game. It's called "see who can be quiet the longest." Russell: Cool! My mom loves that game!
Cane : Wait, wait. Wait! Russell, hang on. Walk back. Walk back. Russell: Okay. Cane : Come on. Come on. Where.... Where are we? Russell: This doesn't look like the city or the 1 , Mr. Fredricksen. Cane : Don't worry, Ellie. I got it. There it is! Ellie, it's so beautiful! We made it! We made it! Russell, we could 2 right over there! Climb up, climb up! Russell: You mean, assist you? Cane : Yeah, yeah, whatever. Russell: Okay, I'll climb up! Cane : Watch it! Russell: Sorry. Cane : Now, when you get up there, 3 and hoist me up. Got it? Do you on the porch yet? What? That's it? I came all this way here to get stuck. At the wrong end of this rock pile? Great. Russell: Hey, if I could assist you over there, would you sign off on my badge? Cane : What are you talking about? Russell: We could walk your house to the fall. Cane : Walk it? Russell: Yeah. After all, we weigh it down. We could walk it right over there. Like a parade balloon. Cane : Now, we're gonna walk to the falls quickly and quietly. With no rap music or flash dancing. We have three days at best. Till the helium 4 those balloons. And if we are not at the falls when that happens Russell: Sand Cane : We're not getting to the falls. Russell: I found sand! Cane : Don't you worry, Ellie. We'll get our house over there. Russell: It is fun already, isn't it? By the time we get there, You're gonna feel so assisted. Oh, Mr. Fredricksen, if we happen to get 5 , use the wilderness explorer call. Wait, why are we going to paradise falls, again? Cane : Hey, let's play a game. It's called "see who can be quiet the longest." Russell: Cool! My mom loves that game!